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參數(shù)資料
| 型號(hào)： | MCT7818CT |
| 廠商： | MOTOROLA INC |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | THREE-TERMINAL POSITIVE FIXED VOLTAGE REGULATORS |
| 中文描述： | 18 V FIXED POSITIVE REGULATOR, PSFM3 |
| 封裝： | PLASTIC, SFM-3 |
| 文件頁(yè)數(shù)： | 6/12頁(yè) |
| 文件大?。?/td> | 224K |
| 代理商： | MCT7818CT |
MCT7800
MCT7800
6
MOTOROLA
ELECTRICAL CHARACTERISTICS (continued)
(Vin = 19 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MCT7812B
MCT7812C
Characteristics
Symbol
Min
Typ
Max
Min
Typ
Max
Unit
Ripple Rejection
15 Vdc
≤
Vin
≤
25 Vdc, f = 120 Hz
Dropout Voltage (IO = 1.0 A, TJ = +25
°
C)
Output Noise Voltage (TA = +25
°
C)
10 Hz
≤
f
≤
100 kHz
Output Resistance f = 1.0 kHz
Short Circuit Current Limit (TA = +25
°
C)
Vin = 35 Vdc
Peak Output Current (TJ = +25
°
C)
Average Temperature Coefficient of Output Voltage
RR
—
62
—
—
62
—
dB
VI – VO
Vn
—
2.0
—
—
2.0
—
Vdc
μ
V/VO
—
10
—
—
10
—
rO
ISC
—
18
—
—
18
—
m
A
—
0.2
—
—
0.2
—
Imax
TCVO
—
—
2.2
–1.0
—
—
—
—
2.2
–1.0
—
—
A
mV/
°
C
ELECTRICAL CHARACTERISTICS
(Vin = 23 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)
MCT7815B
MCT7815C
Characteristics
Symbol
Min
Typ
Max
Min
Typ
Max
Unit
Output Voltage (TJ = +25
°
C)
Output Voltage (5.0 mA
≤
IO
≤
1.0 A, PO
≤
15 W)
17.5 Vdc
≤
Vin
≤
30 Vdc
18.5 Vdc
≤
Vin
≤
30 Vdc
Line Regulation, TJ = +25
°
C (Note 2)
17.5 Vdc
≤
Vin
≤
30 Vdc
20 Vdc
≤
Vin
≤
26 Vdc
Load Regulation, TJ = +25
°
C (Note 2)
5.0 mA
≤
Vin
≤
1.5 A
250 mA
≤
Vin
≤
750 mA
Quiescent Current (TJ = +25
°
C)
Quiescent Current Change
17.5 Vdc
≤
Vin
≤
30 Vdc
18.5 Vdc
≤
Vin
≤
30 Vdc
5.0 mA
≤
IO
≤
1.0 A
Ripple Rejection
18.5 Vdc
≤
Vin
≤
28.5 Vdc, f = 120 Hz
VO
VO
14.4
15
15.6
14.4
15
15.6
Vdc
—
14.25
—
15
—
15.75
14.25
—
15
—
15.75
—
Vdc
Regline
—
—
11
5.0
300
150
—
—
11
5.0
300
150
mV
Regload
—
—
3.0
2.0
300
150
—
—
3.0
2.0
300
150
mV
IB
IB
—
5.5
8.0
—
5.5
8.0
mA
—
—
—
—
—
—
—
1.0
0.5
—
—
—
—
—
—
1.0
—
0.5
mA
RR
—
60
—
—
60
—
dB
Dropout Voltage (IO = 1.0 A, TJ = +25
°
C)
Output Noise Voltage (TA = +25
°
C)
10 Hz
≤
f
≤
100 kHz
VI – VO
Vn
—
2.0
—
—
2.0
—
Vdc
—
10
—
—
10
—
μ
V/VO
Output Resistance f = 1.0 kHz
rO
ISC
—
19
—
—
19
—
m
Short Circuit Current Limit (TA = +25
°
C)
Vin = 35 Vdc
—
0.2
—
—
0.2
—
A
Peak Output Current (TJ = +25
°
C)
Average Temperature Coefficient of Output Voltage
Imax
TCVO
—
2.2
—
—
2.2
—
A
—
–1.0
—
—
–1.0
—
mV/
°
C
NOTES:
1. Tlow= 0
°
C for MCT78XXC
= – 40
°
C for MCT78XXB
Thigh= +125
°
C for MCT78XXB, C. When the junction temperature exceeds +125
°
C, internal current limiting
will reduce the output current to less than 1.0 A at a VI–VO of 15 V or
greater. The MC7800 die will supply more current under the same conditions.
2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately.
Pulse testing with low duty cycle is used.
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